Information, Technology, Security, and other stuff.
Installing iRedMail is quite a simple process with the provided installation script, but I found with CentOS installations with the GUI enabled the web server would throw 502 errors.
The problem specifically? I was getting this in my nginx error log (
2015/10/19 22:28:44 [crit] 25668#0: *2 connect() to unix:/var/run/php-fpm/php-fpm.socket failed (2: No such file or directory) while connecting to upstream, client: 192.168.1.2, server: _, request: "GET /mail/ HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.socket:", host: "example.com"
Now apparently this means that there is a permissions problem with nginx communicating to php-fpm. I'm not going to lie, I really have no clue what this means, but here's what I did to fix it:
## Make php-fpm listen on port 9000 sed -i 's\listen = /var/run/php-fpm/php-fpm.socket\listen = 127.0.0.1:9000;\g' /etc/php-fpm.d/www.conf ## Tell nginx to connect to it over the network instead sed -i 's/fastcgi_pass php_workers;/fastcgi_pass 127.0.0.1:9000;/g' /etc/nginx/conf.d/default.conf
Now because this failed during the initial installation, the services required won't have started, so start them all up:
systemctl restart uwsgi systemctl restart php-fpm systemctl restart nginx systemctl restart dovecot systemctl restart iredapd
I hope this works for you as it did for me.